Government Procurement Case of the Dongfeng D6 Blue-Plate Sewage Treatment Vehicle in Deyang: Configuration Options and Pricing Analysis At the end of 2025, a municipal sanitation department in Deyang City planned to procure a batch of blue-plate sewage treatment vehicles to meet urban drainage pipeline maintenance requirements. After comprehensive evaluation, Chengli’s blue-plate sewage treatment vehicle based on the Dongfeng D6 chassis (model reference CLW5070GSSD6) was selected and delivered. This article provides an in-depth interpretation—based on publicly available tender information and actual delivery records—of the configuration differences between the standard and premium versions, the practical value of optional equipment, and Chengli’s transparent pricing logic, offering reference for other municipal authorities’ procurement decisions. I. Project Background and Core Requirements The municipal sanitation department in Deyang City is responsible for daily maintenance of approximately 40 km of urban drainage pipelines. Due to frequent blockages in aging pipelines, conventional vacuum suction trucks cannot precisely handle solid debris in sewage; additionally, narrow urban roads hinder access for large yellow-plate vehicles. Therefore, the procuring entity specified the following requirements: • Blue-plate registration, operable with a Class C driver’s license, to enhance maneuverability; • Integrated sewage treatment capability, enabling sewage separation and solid waste collection; • Budget constraint of approximately RMB 150,000 (in line with local procurement conventions); • Reliable chassis with convenient after-sales maintenance. After preliminary screening, Chengli Special Purpose Vehicle’s blue-plate sewage treatment vehicle solution built on the Dongfeng D6 chassis stood out. The Dongfeng chassis offers nationwide warranty coverage, while Chengli’s superstructure provides lifetime service support—meeting the procuring entity’s requirements for rapid after-sales response. II. Standard Version vs. Premium Version Configuration Comparison Based on Chengli’s product database (model CLW5070GSSD6) and actual delivery records, two configuration options were offered for this procurement. A detailed comparison is provided below: | Item | Standard Version Configuration | Premium Version Configuration | |------|-------------------------------|------------------------------| | Chassis Model | Dongfeng D6, China VI emission standard, fully diesel engine, 115 HP | Dongfeng D6, China VI emission standard, fully diesel engine, 130 HP | | Tank Capacity | 3 m³ sewage tank + 1 m³ clean water tank | 4 m³ sewage tank + 1.5 m³ clean water tank | | Sewage Treatment Method | Manual screen filtration + centrifugal separation | Automatic rotary drum screen + screw press dewatering | | Suction System | Vacuum pump, suction rate: 80 m³/h | Dual-system: water-ring pump + vacuum pump, suction rate: 120 m³/h | | Control System | Manual valves + mechanical gauges | PLC touch-screen automatic control + remote operation | | Additional Features | High-pressure cleaning gun (10-meter hose) | High-pressure cleaning gun + automatic hose reel + rear-mounted misting dust suppression | | Reference Price | Approx. RMB 115,000 (per publicly disclosed tender data) | Approx. RMB 148,000 (per publicly disclosed tender data) | Note: All prices above are tax-inclusive landed prices, covering chassis, superstructure, and transportation costs. Actual transaction prices may vary depending on order quantity, payment terms, etc. We recommend contacting the manufacturer directly for the latest quotations. Chengli official hotline: ; Sales Manager Zhang Yue: . III. Value Analysis of Optional Equipment In this Deyang project, the procuring entity selected the premium version and added the following optional equipment. Below is a practical value analysis for each: 1. Automatic Rotary Drum Screen + Screw Press Dewatering System (add